CVE & CISA-KEV Catalog

CVE-2026-3047

HIGH
8.8
CVSS v3
NVD

Description

A flaw was found in org.keycloak.broker.saml. When a disabled Security Assertion Markup Language (SAML) client is configured as an Identity Provider (IdP)-initiated broker landing target, it can still complete the login process and establish a Single Sign-On (SSO) session. This allows a remote attacker to gain unauthorized access to other enabled clients without re-authentication, effectively bypassing security restrictions.

CWE-305

How to fix

Remediation Available
rhbk/keycloakRed Hat / RHEL
Fixed in:rhel9@sha256:172d9f060709fdf5df5b6a8db9dc8001ff4d41025900e225d43ded8d189522d6_ppc64leRHSA-2026:3925
Fixed in:rhel9-operator@sha256:6dead5fff17a33fc1e37a28f98051f631a74b616d0a2d66fe84169d0eeaed0b4_ppc64leRHSA-2026:3925
Fixed in:rhel9@sha256:708b0282101911143c468a7c78a3c815e8a8fcee01d001d1e9504d7fa14c9337_arm64RHSA-2026:3925
Fixed in:rhel9-operator@sha256:252532cad9e091df87b895d82a59dfb6bc7bc97a777fe313ca43f0cacee7bd10_arm64RHSA-2026:3925
Fixed in:rhel9@sha256:08b5b94d827dbdaba29126c9389476341d1ca9ebeca6a764491862a38d19bb0e_s390xRHSA-2026:3925
Fixed in:rhel9-operator@sha256:cb02cd23c13e0ae1e6404784b22608444b0752749432970ad1e8c4f2cd74ea53_s390xRHSA-2026:3925
Fixed in:rhel9@sha256:97f579e9720a458a3d4a277dd19cc0e669b70bf863fdda5298f420d6442dd199_amd64RHSA-2026:3925
Fixed in:operator-bundle@sha256:ca0959572305bc27cc969355f06e14b0bb5c7dedea9619e884f7bd3bec9bb2bc_amd64RHSA-2026:3925
rhbk/keycloakRocky
Fixed in:rhel9@sha256:172d9f060709fdf5df5b6a8db9dc8001ff4d41025900e225d43ded8d189522d6_ppc64leRHSA-2026:3925
Fixed in:rhel9-operator@sha256:6dead5fff17a33fc1e37a28f98051f631a74b616d0a2d66fe84169d0eeaed0b4_ppc64leRHSA-2026:3925
Fixed in:rhel9@sha256:708b0282101911143c468a7c78a3c815e8a8fcee01d001d1e9504d7fa14c9337_arm64RHSA-2026:3925
Fixed in:rhel9-operator@sha256:252532cad9e091df87b895d82a59dfb6bc7bc97a777fe313ca43f0cacee7bd10_arm64RHSA-2026:3925
Fixed in:rhel9@sha256:08b5b94d827dbdaba29126c9389476341d1ca9ebeca6a764491862a38d19bb0e_s390xRHSA-2026:3925
Fixed in:rhel9-operator@sha256:cb02cd23c13e0ae1e6404784b22608444b0752749432970ad1e8c4f2cd74ea53_s390xRHSA-2026:3925
Fixed in:rhel9@sha256:97f579e9720a458a3d4a277dd19cc0e669b70bf863fdda5298f420d6442dd199_amd64RHSA-2026:3925
Fixed in:operator-bundle@sha256:ca0959572305bc27cc969355f06e14b0bb5c7dedea9619e884f7bd3bec9bb2bc_amd64RHSA-2026:3925

This vulnerability affects an unusually large number of packages. The highest-confidence fixes are shown above; the full list is longer. Check the referenced advisories for complete coverage.

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.47%probability of exploitation in 30 days
38thpercentile

Low risk: more likely to be exploited than 38% of all known CVEs.

References

Related Vulnerabilities

Other CWE-305 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2025-31161Critical9.8100%KEV + RansomFix
CVE-2020-10923High8.885%--
CVE-2023-28126Medium5.967%--
CVE-2023-34124Critical9.846%-Fix
CVE-2025-32011Critical9.827%--
CVE-2024-37085Medium6.826%KEV + RansomFix

Common questions

How do I fix CVE-2026-3047?

Published advisories record a fix for 2 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2026-3047 being actively exploited?

Not that we know of. CVE-2026-3047 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.47% is the estimated probability that it will be exploited in the next 30 days. That is higher than 38% of all scored CVEs.

How severe is CVE-2026-3047?

CVE-2026-3047 has a CVSS v3 base score of 8.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-3047 affect?

Published advisories record a fix for rhbk/keycloak (Red Hat / RHEL), rhbk/keycloak (Rocky). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-15.